How To Fix IU623 - Switch not possible for any table

SAP Error Message - Details

• Message type: E = Error

• Message class: IU - Incremental Conversion (ICNV)

• Message number: 623

• Message text: Switch not possible for any table

Note:
A switch is not possible for any of the tables currently in the
worklist. This could be for the following reasons:
The tables are converted within an upgrade. The switch for such tables
is automatically made in upgrade phase PRUN_RADISWTC or PCON.
The progress made when converting the individual tables is not yet
sufficient.
The tables are not currently in status 'Conversion' (see also the
status column).
See also <DS:TX.ICNV_HOWTO_5>'Switch'</>.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message IU623 - Switch not possible for any table ?

  The SAP error message IU623 ("Switch not possible for any table") typically occurs in the context of the SAP system when there is an attempt to switch a table from one state to another (for example, from a transparent table to a pooled or cluster table) but the operation cannot be completed due to certain constraints or conditions.
  Causes:
  
  Table Type Restrictions: The table you are trying to switch may not be eligible for the operation due to its current type or structure.
  Data Consistency Issues: There may be existing data in the table that violates the constraints required for the switch.
  Dependencies: Other objects (like views, indexes, or foreign keys) may depend on the table, preventing the switch.
  Technical Settings: The technical settings of the table may not allow for the switch operation.
  Database Constraints: The underlying database may have constraints that prevent the switch.
  
  Solutions:
  
  Check Table Type: Verify the current type of the table and ensure that it is eligible for the switch you are attempting.
  Data Cleanup: If there are data consistency issues, you may need to clean up the data in the table to meet the requirements for the switch.
  Remove Dependencies: Identify and remove any dependencies (like foreign keys or views) that may be preventing the switch.
  Review Technical Settings: Check the technical settings of the table in the Data Dictionary (SE11) to ensure they are appropriate for the switch.
  Consult Documentation: Refer to SAP documentation or notes related to the specific table and the switch operation you are trying to perform.
  Use Transaction Codes: Use transaction codes like SE14 (Database Utility) to analyze and manage the database objects.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or solutions for this specific error.
  Transaction SE11: Use this transaction to view and modify the table structure and settings.
  Transaction SE14: This transaction can be used to manage database objects and may help in resolving issues related to the switch.
  SAP Community: Engage with the SAP Community forums for discussions and solutions shared by other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your SAP Basis team or reach out to SAP support for further assistance.